多层螺旋CT评价脊柱金属置入物产生金属伪影及其影响因素

被引:17
作者
吴骏峰
杨长伟
李明
机构
[1] 上海长海医院骨科
关键词
脊柱; 金属置入物; 多层螺旋CT伪影;
D O I
暂无
中图分类号
R816.8 [外科、骨科];
学科分类号
100106 [放射医学];
摘要
随着脊柱外科基础和临床研究的不断进展,椎弓根钉棒系统已经成为最常用的脊柱外科置入物。多层螺旋CT和磁共振成像可以产生切面图像。磁共振成像能够评估骨髓和软组织,对没有金属置入物的患者,术后磁共振成像检查仍是首选的成像模式。但对手术后带有金属置入物的患者,由于存在金属伪影,其成像质量大大降低。因此,多层螺旋CT就成为对置入材料、皮质骨及其解剖关系的重要评估手段。文章着重讨论在金属置入物存在的条件下,多层螺旋CT检查时金属伪影的产生机制、影响因素及伪影的消减技术问题。
引用
收藏
页码:1677 / 1680
页数:4
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